Allow fallback to SSL 3.0 (Internet Explorer): registry value EnableSSL3FallbackComputerHKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings

Policy ID: Advanced_EnableSSL3Fallback
Scope: Computer Configuration
Supported on: At least Internet Explorer 7.0
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Internet Explorer › Security Features

Registry

EnableSSL3Fallback

REG_DWORDComputer

HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings Current key

Enabled value: Depends on the option value
Element: Allow insecure fallback for:

Options
Item	Stored value
No Sites	0
Non-Protected Mode Sites	1
All Sites	3

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings]

; Options (use only one)
; No Sites
"EnableSSL3Fallback"=dword:00000000
; Non-Protected Mode Sites
"EnableSSL3Fallback"=dword:00000001
; All Sites
"EnableSSL3Fallback"=dword:00000003

CMD

:: Options (use only one)

:: No Sites
reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings" /v "EnableSSL3Fallback" /t REG_DWORD /d 0 /f
:: Non-Protected Mode Sites
reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings" /v "EnableSSL3Fallback" /t REG_DWORD /d 1 /f
:: All Sites
reg add "HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings" /v "EnableSSL3Fallback" /t REG_DWORD /d 3 /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings' -Force | Out-Null

# Options (use only one)
# No Sites
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings' -Name 'EnableSSL3Fallback' -PropertyType DWord -Value 0 -Force | Out-Null
# Non-Protected Mode Sites
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings' -Name 'EnableSSL3Fallback' -PropertyType DWord -Value 1 -Force | Out-Null
# All Sites
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings' -Name 'EnableSSL3Fallback' -PropertyType DWord -Value 3 -Force | Out-Null